I agree with you that it could be done. I just dont think anyone is going to spend the amount of capitol it would take sift through all that crap just to find out anything about insignificant meWell, that's not the question the OP asks, but okay, I'll play,...
The NSA disagrees with you.
And so did the last (3) president(s), and probably the current one.
And so does most of the congress.
And so does the Director of National Intelligence.
The FBI.
The CIA.
Homeland Security. (what an oxymoron that one is, in this context)
We recently found out the US Government operates 17 "intelligence" agencies. 17! WTF!?! Why?
Data is only "worthless" until the day it can convict or exonerate you. And unless you go without, or keep your phone turned off, (with the battery removed in some cases) you are, in the view of the aforementioned agencies and people, volunteering that data.
Then there's the threat of hacking, which has been in the news a lot lately.
Think about what people do with their phones nowadays.
They've gone way beyond a pure communications device for some people.
Deposit checks.
Pay their bills.
Manage investments.
Use them to plot their travels.
Keep their itineraries.
Mobile devices are the modern cache of "papers" and "effects" that citizens accumulate, and often prefer to keep private.
I give you as a reminder, the 4th Amendment:
So, in essence, modern day "papers and effects" are being seized the instant you make or transmit them.
And you are saying that's okay, as long as no one asks to look at them. That it's okay for someone in the government to have access to, or know your most private business and whereabouts at all times. Even without a warrant.
"I got nuthin' to hide" only works until it doesn't.
And I disagree with the very notion of that. Especially when they assure you "they" are keeping it safe, when people like Julian Assange and Edward Snowden and Bradley Manning have shown the world that those people are lying to you/us.
Newsflash: It ain't safe. Not now, not then, not ever. And NOT from your government.
The founders gave us the BoR and the 1st, 2nd, 4th and 5th (and all the rest of the) Amendments for a reason. You can't turn your nose up at the meaning and intent of the 4th Amendment, without jeopardizing all the rest.
Erosion of our rights and the abdication/abrogation of them is serious business.
ALL of our rights.
Electronic communications shouldn't change that, even on a mass scale.
Computers are really good at a few things.
One of which is the ability to sift through HUGE amounts of data and isolate single items, and series of items, and through the use of algorithms, discover patterns established by those items.
So don't get the idea that your data amounts to the proverbial "needle in the haystack" because there's millions of these phones. That's irrelevant. Modern computing has made the haystack obsolete.
Each individual blade of grass/hay has been issued a number.
Your needle stands out among them.